everyting is new. I was running castrol 20-50 w/ KN oil filter. Talked w/ guy to built the bottom end he sugested try a Motorcraft oil filter and then switching to straight 40w. tried that still running 15 @ idle. Listen to the oil pan and along the block there isn't and noise. check my oil filter adapter (new aftermarket) the gasket didn't blow out and design doesn't allow for oil to go anywhere but to and from the filter. I have a decent flow at the rocker shafts, also check for any of the lifters leaking but they're all firm.